Most models continue to predict the system will curve north before reaching the U.S. coastline, but that is not assured.

WHAT FLORIDA CAN EXPECT: It's too early to say.

PARTICULARS: As of 2 a.m., the hurricane center gave the system a 60 percent chance of strengthening into a depression or storm over the next two days - and a 60 percent chance over the next five days.

Earlier this week, it had been given a 70 percent chance of developing by Friday.